| 摘要 |
PURPOSE:To reduce cost by omitting equipment for moving a precast floor slab in lateral direction and for adjusting the height when a precast floor slab is suspended from PC steel rods in suspension floor slab bridge construction and minimizing the scale in temporary equipment in front of an abutment. CONSTITUTION:An upper suspension member 13 is first suspended with a crane 17 in using the upper suspension member 14 having a rectangular frame and a U-shaped jig 9 in combination. In the state that a precast floor slab 3 is suspended with chains 15 suspended at four corners of the upper suspension member 4, the precast floor slab 3 is insertion mounted into the U-shaped jig with the upper suspension member 14 being perpendicular to the end face of an opening of the U-shaped jig 9. Then, the upper suspension member 14 is taken off from the precast floor slab 3 and then is turned round 90 degrees. The chains 15 suspended at the four corners of the upper suspension member 14 are attached to hooks 13 on the upper surface of the U-shaped jig, so that the U-shaped jig is carried to a specific position of the PC steel rods 1. The PC steel rods 1 are thus placed on the precast floor slab 3, so that the precast floor slab 3 is suspended by the PC steel rods 1 and moved forward. |
